User's Manual
Biamping
If your speakers can be biamped, the
Cinema Grand Amplifier can be configured to provide a very powerful stereo system.
Inputs
Tweeter
WooferA speaker which can be biamped or biwired will have two sets of binding posts. Sometimes these posts are joined with shorting links for normal operation.
Make sure that any links are removed when you want to biamp or biwire the speakers.
Each speaker can be driven by two amplifier channels, one to drive the woofer and one for the upper range. You will need to use four amplifier channels to run two speak- ers.
If you use the Cinema Grand Amplifier for biamping, then a total of three speakers can be connected. You will need an extra two channel amplifier if you want to run the rear speakers in a home theater system.
Output connections
•Connect the amplifier’s right rear output to the right speaker’s woofer input terminals and connect the amplifier’s right front current source output to the right speaker’s upper range input terminals. If you prefer, you could use the right front voltage source instead.
•Connect the amplifier’s left rear output to the left speaker’s woofer input terminals and connect the amplifier’s left front current source output to the left speaker’s upper range input terminals. If you prefer, you could use the left front voltage source instead.
Input connections
Each amplifier channel has two RCA inputs which are connected together inter- nally.
•Connect the preamp’s stereo output to the front channel RCA jacks. Then install short interconnects from the other unused front RCA jacks across to the rear channel RCA jacks. In this way, the front and rear amplifier channels are fed with the same signal from your preamp.
•Note: you cannot use balanced cables in, with RCA out, or RCA in with balanced out.
If you have an external active crossover, then you can greatly increase the efficiency of your system. The crossover will split the preamp signal into two frequency ranges. The rear channel amplifier will receive the low frequency range, and the front channel amplifier will receive the higher range. This is efficient because each channel only amplifies signals within the frequency range of the speaker element they are driving. Little power is wasted. Make sure that you set the crossover point of your active crossover to match the crossover point of your speakers.